Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccf872cb17319f40c67003ebd548129d4277ca2fb5e0a2b90e8b65c61d3c5edb' 
  AND token = 'WNOOpes0JhUQR362p0aDP1IvmGOYVFUVAaw34Cd8VOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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