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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f2f5e311bb34076b5b92e4e99494374e7fe7435fd6f5a40f3862d455bfdeeb31' 
  AND token = 'iAWbpp7EJDJzC/hywoCDNZTh0z8RoBoQ90lqonZqT5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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