Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f99e10192238231924dfbafbfc92c9466a06f8b60d8178fd3ffb3aee57cf1584' 
  AND token = '7wrt+y1eGsu9ijxfBOtp2kXQwlpernhMN/Iog262h4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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