Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd1d2668541b70f40ca45dfeb382513fa4b1f6676973954f98f654df7af0efb9' 
  AND token = 'opk396QJW9jb2eufwzpmypz2FejHVv9srySALVVeYSw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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