Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25e9d004ae6d16b62b9a07f549a1a5be2c95770acb02d56ad5a86d801d32e866' 
  AND token = 'AOGrmfZZJoy4+2r+Zzsi9gn2B8rvtOXlQlSeJN4V3nU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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