Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70265ad8812bd175e6bc61e3c12e554ce0f77c8c3086164a8ee971512d5d129e' 
  AND token = 'NrWa+waj44exdle6S2nPJeo02qCkCysJGJQjZILugkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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