Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e1c7dda4667dfaca741f5af9d44323f75a5bc5508b6f00be71ab47257b8a4c0' 
  AND token = 'VyPXgx+sEdo1zKdoE25oap76X/ISbFRs7vKp0+BW2mk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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