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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e6d53996fa900dd6325a130914a7de882f2ad5c0a54933d97eadae7c2176801e' 
  AND token = 'B4woze2wu3USso+s9K9cOVk7a/9Wb4EV17rOFCQB/Nc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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