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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '30ff6dc4edbefbaf4fee06eda1c5b25dbec8b4806531b80aba8474acf26d8d1d' 
  AND token = 'g1TuzG3BgBEE0AXSj0Y2LwwtVGv6b8t19oVxA/O/NAM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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