Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '5319962ecb8ab8f61de155a32dcd78c7a2b700d1459b43d696e36adfd01da0cb' 
  AND token = '3fkxb9uFYHCndrgLlkQWdRB2Jji0Y2a/fRhE6880YdA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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