Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afd7011b0e10e9a55916a408d7b43a5295a23220705274f772080e9f46edbdd5' 
  AND token = 'Ly+mggJoXNLYxEvfv6OQ03LJNJnQ8J3yXhK/LdpSqvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}