Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba8474f9c7c88f10b09eac745c73b98c471aa713a78b98e9d027f5bf9b56485a' 
  AND token = 'ujUuxuhRsqb2MH4iXtP3kNFgfsr6pNdyYlsFPsisXmw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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