Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e007f90dacf3850f67ff800a1b6b3bd2fed5e7ab7a6edba00e3f9a13662be71' 
  AND token = 'su73zsDmTbADyePq02ipM3QXIPi6ktJ81pWZeszTVM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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