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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '78e16e1e28fb350caec4c848b73c044e102dc87cb076c5ea374488b1d96eeebe' 
  AND token = 'F47Rzgr7npsD9TC1s4i9pUyuO2ftLCW5CtAEO3CVxw8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}