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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f027112a311cf90ef52373bc72d83f6a1cf9cdc50327e5a6c5b963faf0da223f' 
  AND token = 'ltNDq3ghH7WYh/XF+PoyVJC1eP7PDJO565htmY5yO5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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