Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9866ffe4e2c0b73157bf5b3c28ce426c4da23c9d06bbc222106c0550dd96d7b6' 
  AND token = 'A2CdGzHntQf7a+cluv1lqeOPN9zUclirRdq+6CJdAi4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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