Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac38cea4387012e383dd02ebdbef61c7c145f2c410c98483cdef3f5a192d0979' 
  AND token = 'YgDxXHDRuSIek4YVFwJYFfH46+X6Y4JsOsJasX6aOao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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