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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9022319bc4884f2b64679a96ed4ca5b3a4ceef5970122677aedb4225840d3047' 
  AND token = 'uRD4a9aFcieB9/XOSS22ADcQCI0M5LE/NHAJDxti+K4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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