Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97dd8a97c5eae0dba0fc38515eee87829aa2502b7fd9ac76f559092f5c3f2c07' 
  AND token = 'FEFujE3ntvHphjaHAnirvbI/eoJEwyJU62f2KIj+7ks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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