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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '776ceaf74e9f79d321580466275d64a13c154b8583576b6b955b6ec6bf540775' 
  AND token = 'CaSCfn+CmZ0PtKad4dKl0D/2GnKyr7ME+6pyqXYBvhI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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