Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '701319992f3f90f9cb2124aff9138efa9a97adfe18525a0e3fdc0df65d0b0a7b' 
  AND token = 'OSP7tqJ9cZsX/3RLNPuAD4iSJr814vLBXbprleZ725Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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