Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43875862b7899b33339c690e7e9908da07f708b655fdf44635521bc0bc9b9872' 
  AND token = 'zJRo1w61mXlI1bW7rsi3cMr2vhwjbg/NdVNGeILmNwE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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