Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aeac23255bd8eb056902e86ae2e6599974dee7f480af62a2846c50650b45f366' 
  AND token = '/8SqyhR1LJlxu1Fqfkm7qWJ0TPSmHgDSmknblA5Eynw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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