Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebda560f092e6f49ab5423e136f26d8fb4b86ef568bcc22c7ba7e597dacf16fe' 
  AND token = '0+VqNMuGAKzmXIzEX7cm2C9P+2ROow7+Z2xKDey24Sk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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