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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bde82c490b9333cba5246c8a7a768ae84e66b0985fd4fc3a10a9829254510eb6' 
  AND token = 'IqGYFDMnc3ZGP/DXi6wbtOlluED6Hckdj4ACxrnEnro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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