Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b913075364da002c86056c4b1ab0056d7a3f7ecb52b411a2284702e51c55ab7' 
  AND token = 'ViVXVy6iEegLRO4ytgcuR4h3YgO4ph+4XleRkDv6sLg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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