Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '648556936aed4c2df2680396e4d9567ee6667b92fcefc923be2126a48b65d8af' 
  AND token = 'bynqMNvP2CmpaQnR+0zxGk7MsfERiX1eaWwu0NY5QUE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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