Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aeb20af09fe08a4450a75e100cb62fb84b72a1781f714e7617a086a8d5bc07d7' 
  AND token = 'n2b7d1RawHZpmaMHc1WWBhaZpEkKaMOFLLYu/43BfgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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