Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bc757de5ed8d8c1dd4328a5ea921d4acc5d194602487b9d0607a997d162dcfa' 
  AND token = 'RZXAPiJJ8bzgH/EHfpeD2/JYpCengH3Ty0I45rlc4LY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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