Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '3c27b1ea3c3b5ccbd94ffb8b0399693bc8ca06c062f01b41bfd41b6dba2a1b19' 
  AND token = 'pNlsJSl2n4x6CXAd6ubqHWm769jjO2i93j70UW5cQbI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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