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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca078e024bfd4fedd1f78040e1c4f4f161c95c06b8efc17efa1e6ba6133cb0b8' 
  AND token = 'BLy71FdlEhSGen6LhDY5x6VHbsFuVY20qI7uqHEy/I8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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