Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08bb116813c9026af7e7dafa31dc3c0aaa505fb05043caac046f48068d422c26' 
  AND token = 'xhHWElGQkVcHUf40YemVAnYFDyB7CPu37tMCXAw0C3s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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