Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd17350bc933a8b4efee2ac795e4b79d5be54c152858c9ded2e44105ad30bc65' 
  AND token = 'KingAMRIingn5q4a5tsTk3f0ySUKCM2ueLe9LtfSJbo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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