Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29332804846cfab15431e0a1fc55973b0fbcfbed8baa3629c66d3bd6f30e26ed' 
  AND token = 'nAOuriLEY7sNi2gdVqQIICQWE30HxZKyNFkeX+2mTEg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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