Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b31d740fa30feea94f06f8d5fd6879cf8fa62c2dbecac01a2974177672d0a8f3' 
  AND token = 'lbh1B9sxCBzCevAEO+cq2/payOTEZf1+DTfl6QU3mRY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00758

JSON explain

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