Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed3184b6a9433a1611ee877f2e4197c85ffb0563ca38a87a36e78630d594268a' 
  AND token = 'IAfCj0Hl9B3lLtgtMObRTfW22dR08b3Khha69fy9ceQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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