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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de09f24bbe6ae6847c91773d9f494e024e61cb5cae46cab07cf583b6bcb57cb4' 
  AND token = '4eX6CBvXA0v8lGXPtnfcSpWrPeJO/sbQ/XJiYOAufrw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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