Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0938a06c0a4993422812d64c27b6f05fdb58c52ef93c41d730b0321682fbd6a7' 
  AND token = 'qxpfkSD8+8JUnYSzoblFVKHnY5y7lC+HnPbRCPNRFo0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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