Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89adb2583a1626310baeba9d8af0947482c2cd044d576df010537870bb121b22' 
  AND token = 'qJ6sbTT1RQaX7LRiMRlLVgwWqG6Z3dr7AgrubKv72rs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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