Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5529f6812fe946043cc24987f130324d92f2402f4a92ef14a95a9e77e12dffa1' 
  AND token = 'IFZiQ6E+U3+pG6qd9k2DIJL8xF7NQJRvST5imtqygO0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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