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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '161e6cbcb8e3c36e7ab54afb9d3b56e2fda3b0595b690a2a577d184ec1f8fd0d' 
  AND token = 'N4a7BXinvGCSHtpHXdl8UCZW1lB3Xpgx3eDtHBKLQ9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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