Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '717252b1fdd6ace466e08a67fc498e116b6120fb715137bb17764e72fe798876' 
  AND token = 'Fk70Uv1EzFqWZjHsGDAW2uqcj6A9YejfqWcui21Gjbw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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