Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bf3ff4c43e91489453bf312a0372e055c45af54c6c209f1e58e60129abc6365a' 
  AND token = 'hkRnVYmsQSRUu/lEnvVra/pDckPAaHjS4OcSBfTrEgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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