Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b32fdade169fc5776b80e2777981fa487f88fe54132a715e940616e2d86bb6a1' 
  AND token = 'G8z1splVhfiyHdB8z2fTVqznYYQilJ4eN7OGpty2t7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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