Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5088a0d99adec1f7ed4cdc8cdf573649d99d075dabfc98fa096c22848b239d6' 
  AND token = 'MOcbxv0QDifldidGjsmJVkMGj33451j47NRpKzXAOO4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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