Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c110d95fada6fb3389311237a904c48370a16f27ea91e735f9238492c0a118fe' 
  AND token = 'UdtUk874HTg9LKU0oCyutrNX0rRIsLOET2fPS1w9r9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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