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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '195e8a0e3561e41e8b7023102b21b09002341d293242f8e08eb14e883f0dcf26' 
  AND token = '5M0wd/EM4iwa/Uu/2JRBTqJp9BSJ1bAzuHLqunR5EY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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