Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32f80056b0f4ede4b202d9677b54fa9252f06363fd5960f22455ec832495d6ba' 
  AND token = 'znjDxEm4xU8kB1fNHjZxgICOsE19kbEmQ0uYLFooKGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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