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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eb3749db77c1c32c5507631b5f67c3e03d2cbb153f15b606e3d0d0faea9df31f' 
  AND token = 'USu6cOz7Q7a3HDLiZjefURA4p8ikZBCVXUfLH5FiAcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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