Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '604ac2fb70c5dbe0745a1c253bd3944e7308088facf6b697056f5003a14f5505' 
  AND token = 'ZS+qyeRfFHnjgjTLEn4VrKDFfDVhUTCY+i2g7Ou7i+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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