Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e27669d6c67dab3d54c93891670bf3dfb5ce4207bd62382338b0b6e34eb3a22' 
  AND token = '+Bn72RR9AQjPYJaNXsSFN4u829p73fSlAIvd6bVbqjE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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