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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b0ad5b32d085bba4e69d1ae44bb8047dcae73f1210f87fdd80fb7afce125fd8' 
  AND token = 'SB7H++/zJMnAtFj7LudJlNx3WYfR/8uSk4OQgCB0oyk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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