Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6192ca9b59bbbe9b5b2f7e721e48b0f72d9d124375a25c1088362ccad42a7786' 
  AND token = 'csmsPbnImZbYZOT1x3x6N38wJLwoB+3nvvBGtHeGcbc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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