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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '464f9e9ed3e004a466655df7557c92b0faf5c6859d7eb90136a687e90b767b7c' 
  AND token = 'IrBUH71BImsQ4whJJIkLweB3+d6p7d8Kc/wQPA6AOYk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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