Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c64f4546eabb8a3e2fdd579b54de4cec876a2f0d697cbc1e2cda4aea4ca43a15' 
  AND token = 'qptGgCNZtf9vq/LOtzYZogujshNCGsgskOGHTMxYFAY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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