Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '772afb0b8368df2c39558c79882749d403de6c155553cb38e8e10ac2b1784fcd' 
  AND token = 'MSlWU7zxa9O9LKyPhoRILkKji1H1xKB0fl9AN9CrR1Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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