Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60a331fb71bc83591c7cbacef1a925329eda2dfa174d1ca3f2f156f26c1138d6' 
  AND token = 'GqxnWUFiNjj20/pglTYxr8f4ZuixL/hc6GAw4k3+nMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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