Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d1335015cc33d8ec08082756033c1110af16a51b3a441a0ab48ce93cd82cadf' 
  AND token = 'k4cxC1yKCGgBORrhB3crZVBMCiBtT9bGcRcCXjIJgkA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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